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Mechanical response of chondrocyte under intermittent hydrostatic pressure loading.-Regeneration of Articular Cartilage

Research Project

Project/Area Number 15390464
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthopaedic surgery
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

KUBO Toshikazu  Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Professor, 医学研究科, 教授 (20178031)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Kenji  Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Assistant, 医学研究科, 助手 (30347447)
FUJIOKA Mikihiro  Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Assistant, 医学研究科, 講師 (50360029)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥14,900,000 (Direct Cost: ¥14,900,000)
Fiscal Year 2004: ¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 2003: ¥9,200,000 (Direct Cost: ¥9,200,000)
Keywordschondrocyte / intermittent hydrostatic pressure / collagen / caltilage metabolism / cytokine / bone metabolism / osteoarthritis / メカニカルストレス / アポトーシス / HSP70
Research Abstract

Chondrocytes were isolated from the articular cartilage of rabbit joints. The cells were exposed to 0.5 Hz of intermittent hydrostatic pressure(IHP) ranging from 1-5 MPa for 1 hr. After 30 minutes of pressure loading, total RNA was extracted and analyzed by competitive RT-PCR for mRNA expression relating to cartilage metabolism. The expression of proteoglycan did not changed following the exposure to 5 MPa of IHP, but the expression of collagen type II markedly increased. The expression of collagen type I and X were not detected in all cells. These results showed that the exposure to 5 MPa of IHP could inhibit terminal differentiation of chondrocytes and enhance cartilage metabolism. Five MPa of IHP had positive effect on cartilage metabolism.
Human periodontal ligament(hPDL) cells were also loaded to 0.5 Hz of IHP ranging from 1-6 MPa for 1 hr. The exposure to 6 MPa of IHP enhanced the expression of IL-6, IL-8, RANKL and OPG. IL-6 and IL-8 are inflammatory cytokines, and RANKL and OPG are cytokines relating to osteoclasts differentiation. Six MPa of hydrostatic pressure is reported as a human physiological occlusal pressure level. These results demonstrated that physiological IHP had effect on inflammatory cytokines expression and bone metabolism.
These findings provide a clue to elucidation of a part of the pathogenesis of osteoarthritis.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (9 results)

All 2004

All Journal Article (9 results)

  • [Journal Article] ヒト歯根膜由来細胞における静水圧刺激によるサイトカイン発現誘導2004

    • Author(s)
      山本俊郎, 久保俊一
    • Journal Title

      日本歯科保存学雑誌 47

      Pages: 796-802

    • NAID

      10014072779

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] The mechanism of HSP70 protection pathway from apoptosis in chondrocytes.2004

    • Author(s)
      Terauchi, R., Kubo T.
    • Journal Title

      Transaction of Orthopaedic Research Society 29

      Pages: 600-600

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Gene expression of osteoblast from subchondral bone in osteoarthritis.2004

    • Author(s)
      Sakao, K., Kubo T.
    • Journal Title

      Osteoarthritis and Cartilage 12

      Pages: 95-95

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Glutamine protects chondrocytes from heat stress and NO-induced injury.2004

    • Author(s)
      Tonomura, H., Kubo T.
    • Journal Title

      Osteoarthritis and Cartilage 12

      Pages: 108-108

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Hydrostatic Pressure Induces Expression of cytokines in Human Periodontal Ligament Cells.2004

    • Author(s)
      Yamamoto, T., Kubo, T.
    • Journal Title

      The Japanese Journal of Conservative Dentistry 47

      Pages: 796-802

    • NAID

      10014072779

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The mechanism of HSP70 protection pathway from apoptosis in chondrocytes.2004

    • Author(s)
      Terauchi, R., Kubo, T.
    • Journal Title

      Transacsion of Orthopaedic Research Society 29

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Gene expression of osteoblast from subchondral bone in osteoarthritis.2004

    • Author(s)
      Sakao, K., Kubo, T.
    • Journal Title

      Osteoarthritis and Cartilage 12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Glutamine protects chondrocytes from heat stress and NO-induced injury.2004

    • Author(s)
      Tonomura, H., Kubo, T.
    • Journal Title

      Osteoarthritis and Cartilage 12

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] The mechanism of HSP70 protection pathway from apoptosis in chondrocytes.2004

    • Author(s)
      Terauchi, R., Kubo, T.
    • Journal Title

      Transaction of Orthopaedic Research Society 29

      Pages: 600-600

    • Related Report
      2004 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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